I like the idea of removing Ranks and tables, as I was never really pleased with that system - so many things seem arbitrary in advancement tables.
I'm not sure about this Alignment system, though, for reasons mentioned by others. I have played many games in which fluctuating costs have led to a very constrained, counter-intuitive character development. The prime culprit in this regard is the Storyteller system by White Wolf, with it's "assign dots among categories" character creation system that made hyper-specialization so ridiculously better than spreading your points in a way consistent with the concept, it wasn't even funny. I wouldn't like BC to devolve into something like that, with gimped, overspecialized cardboard cutouts of characters dominating the play due to mechanical superiority.
But then again, FFG isn't WW, and we don't know enough details of the Alignment system to really tell how it will turn out. My past experiences with the 40k line make me lean on the side of optimism. In other words, I'm hoping for a nice surprise